Laser Accent XL Vs Laser Genesis - Which is Better for Stretch Marks?

I want to know which laser is better-Accent XL or laser Genesis for stretchmarks that are old and whites? Additionally, I read a article recently in a magazine that stated the Accent XL can get help get rid of older white colored stretchmarks. However, the clinic I am planning on getting treatment suggested that using the Genesis laser is better. Thanks

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